Hancock-Beaulieu, M.; Walker, S.: ¬An evaluation of automatic query expansion in an online library catalogue (1992)
0.00
0.0044084494 = product of:
0.008816899 = sum of:
0.008816899 = product of:
0.017633798 = sum of:
0.017633798 = weight(_text_:m in 2731) [ClassicSimilarity], result of:
0.017633798 = score(doc=2731,freq=2.0), product of:
0.09162503 = queryWeight, product of:
2.4884486 = idf(docFreq=9980, maxDocs=44218)
0.03682014 = queryNorm
0.19245613 = fieldWeight in 2731, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4884486 = idf(docFreq=9980, maxDocs=44218)
0.0546875 = fieldNorm(doc=2731)
0.5 = coord(1/2)
0.5 = coord(1/2)